Unusual reactions to insect bites?

[Frostie]

Thank you for taking my question.

I am a female in my fifties and have never had a reaction to any insect bites in the past except for a few hours of itching.  Recently in the past 4 weeks, something is biting? me. First my left ear lobe and this became three times its size. I had itching with this. That went away and then the upper left arm must of gotten bit and swelled to the size of a tennis ball. I could see some little marks where the bugger attacked me.  The swelling went down in 6 days and three days after that, the right upper under arm got attacked and this swelling lasted 4 days.  I had 5 days of relief until yesterday and whamo, I got it again on the left side of my neck.  There is a lot of swelling and itching under my chin and gland area. There is a small knot where I assume the bite occured.

Question: Have you ever heard of older folks now getting reactions to various insect bites when they never had this in the past?  I have no idea what is biting me. I am home most of the time or on my patio. Each occurance I rub Benydryl on the swollon area. The size of the lesion is most concerning and why so many in such a short period.  Could I have a blood disorder that causes this?  Thanks for your time, doctor.